<?php
/*
分页类 用于实现对多条数据分页显示
version:2.0 //基于1.0 数据库查询用mysqli实现
author:Knight
E-Mail:S.Knight.Work@gmail.com
Date:2013-10-20
*/ /*
调用非常方便,先传入连接正确的mysqli对象,然后直接传入查询的sql字符串即可,也可以在第三个参数指定指定每页显示的数据条数
例如$pages = new Page($mysqli, 'SELECT * FROM `zy_common_member`');
或 $pages = new Page($mysqli, 'SELECT * FROM `zy_common_member`', 10);
*/
class Page{
private $curPage;
private $totalPages;//数据总共分多少页显示
private $dispNum;//每页显示的数据条数
private $queryStr;//查询的SQL语句
private $limitStr;//查询语句后面的limit控制语句
private $mysqli;//连接数据库的mysqli对象
/*
构造函数
$queryStr 查询数据的SQL语句
$dispNum 每页显示的数据条数
*/
public function __construct( $mysqli, $queryStr='', $dispNum=10){
$result = $mysqli->query($queryStr);
$totalNum = $result->num_rows;
$this->dispNum = $dispNum;
$this->totalPages = ceil($totalNum / $dispNum);
$this->queryStr = $queryStr;
$this->mysqli = $mysqli; $temp = (isset($_GET["curPage"]) ? $_GET["curPage"] : 1);
$this->setCurPage($temp); $this->showCurPage();
$this->showFoot();
} /*显示当前页的数据内容*/
private function showCurPage(){
$this->limitStr = ' LIMIT '.(($this->curPage - 1)* $this->dispNum).','.$this->dispNum;
//echo $this->queryStr.$this->limitStr;
$result = $this->mysqli->query($this->queryStr.$this->limitStr); if (!$result)
{
if ($this->totalPages > 0)
{
echo '查询出错'.'<br>';
}
else
{
echo '无数据'.'<br>';
}
return;
}
$cols = $result->field_count;
$array = $result->fetch_fields(); //var_dump($array);
echo '<table border="1">';
echo '<tr>';
for($i=0; $i<$cols; $i++)
{
echo '<th>';
echo $array[$i]->name;
echo '</th>';
}
echo '</tr>'; while($row = $result->fetch_assoc())
{
echo '<tr>';
foreach($row as $key=>$value)
{
echo '<td>';
echo $value;
echo '</td>';
}
echo '</tr>';
} $result->close(); echo '</table>';
} private function setCurPage($curPage){
if($curPage < 1)
{
$curPage = 1;
}
else if($curPage > $this->totalPages)
{
$curPage = $this->totalPages;
}
$this->curPage = $curPage;
} /*
显示分页页脚的信息
如首页,上一页,下一页,尾页等信息
*/
private function showFoot(){
echo '<a href="?curPage=1">首页</a>';
echo '<a href="?curPage='.($this->curPage - 1).'">上一页</a>';
echo '<a href="?curPage='.($this->curPage + 1).'">下一页</a>';
echo '<a href="?curPage='.$this->totalPages.'">尾页</a>';
} } ?>